24 hours in pictures

Sendai, Japan: A school girl sheds tears during her graduation ceremony at Rokugou junior high school in a city badly damaged by this month's earthquake and tsunami Photograph: Yasuyoshi Chiba/AFP/Getty Images

Hargeisa, Somaliland: Inmates looks out from their cell at the UN-funded prison in the autonomous region of Somalia Photograph: Tony Karumba/AFP/Getty Images

Tripoli, Libya: A bomb falls in the Tajura area of the Libyan capital Photograph: Mahmud Turkia/AFP/Getty Images

Keratea, Greece: A petrol bomb explodes in front of riot police during clashes with residents protesting against the planned construction of a landfill site Photograph: John Kolesidis/Reuters

Tripoli, Libya: A Gaddafi supporter masks his face with a green scarf Photograph: Jerome Delay/AP

Budy, Belarus: A white stork flies over the Elnya marsh Photograph: Vasily Fedosenko/Reuters

Grosskrotzenburg, Germany: A thermal image of a coal-fired power station Photograph: Kai Pfaffenbach/Reuters

Sana'a,Yemen: Demonstrators continue to call for the resignation of President Ali Abdullah Saleh Photograph: Muhammed Muheisen/AP

La Plata, Argentina: People watch the Venezuelan president, Hugo Chávez, accept the Rodolfo Walsh prize, a press freedom award, at the University of La Plata Photograph: Natacha Pisarenko/AP

Philadelphia, US: A pedestrian passes through steam rising from street vents Photograph: Matt Rourke/AP

Port-au-Prince, Haiti: Former president Jean-Claude 'Baby Doc' Duvalier greets people after leaving the Canapé Vert hospital Photograph: Hector Retamal/AFP/Getty Images

Santa Cruz de Tenerife, Spain: An aeroplane flies above wind turbines at the island's Technological and Renewable Energies Institute Photograph: Santiago Ferrero/Reuters

Natori, Japan: Local residents look down on the devastated Yuriage district in the Miyagi prefecture Photograph: Yasuyoshi Chiba/AFP/Getty Images